Designed for use with tubeless-ready gravel tires, the Air-Liner Gravel Tire Insert offers an easy-to-use added layer of protection to your tires. The insert provides an increase in control, durability, and overall performance for any sized wheel with a 3-way tubeless valve. If you decide to switch out your tires for new ones, the insert is reusable and can easily be switched over to your new set.